v3d/packet: fix typo on Set InstanceID/PrimitiveID packet

Fixes: 276d22c52 ("v3d: Add some more new packets for V3D 4.x.")

CC: 20.2 20.1 <mesa-stable@lists.freedesktop.org>

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6447>
diff --git a/src/broadcom/cle/v3d_packet_v33.xml b/src/broadcom/cle/v3d_packet_v33.xml
index a5bac10..e0955f8 100644
--- a/src/broadcom/cle/v3d_packet_v33.xml
+++ b/src/broadcom/cle/v3d_packet_v33.xml
@@ -630,11 +630,11 @@
   </packet>
 
   <packet code="54" name="Set InstanceID" cl="B" min_ver="41">
-    <field name="Instance ID" size="32" start="32" type="uint"/>
+    <field name="Instance ID" size="32" start="0" type="uint"/>
   </packet>
 
   <packet code="55" name="Set PrimitiveID" cl="B" min_ver="41">
-    <field name="Primitive ID" size="32" start="32" type="uint"/>
+    <field name="Primitive ID" size="32" start="0" type="uint"/>
   </packet>
 
   <packet code="56" name="Prim List Format">